For editors and renderers the type registry takes precedence over the

For editors and renderers the type registry takes precedence over the
default attr, so we need to register the new editor/renderer for the string
data type in order to make setting a default editor/renderer appear to
work correctly.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29061 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775